Flow Chart of Cotton Yarn Dyeing Process

Cotton Yarn

In dyeing; the process sequence can be vary depending on the shade of the material which is required to produce. I have given a process sequence for the light shade dyeing but the basic sequence is almost the same. Now I like to give a process flow chart of dyeing for medium and dark shades.

Flow Chart of Cotton Yarn Dyeing Process

Yarn dyeing is a step-by-step process. The following is the flow chart of the cotton yarn dyeing process for medium and dark shades. They are-

Carrier and vessel washed by hydrose and caustic at 100⁰ C for 20 min

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Load the package in the carrier and feed it to the vessel

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Add wetting agent, antifoaming agent, and a sequestering agent and run at 60⁰ C for 10 min

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Water solution drain

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Add wetting agent, sequestering agent, caustic soda, and hydrogen peroxide and run at 110⁰ C for single yarn and 115⁰ C for double yarn for 20 min

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Drain

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Add peroxide killer and run at 90⁰ C for 10 min

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Peroxide check in the package

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Drain

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Add acetic acid for neutralization and run for 20 min at 50⁰ C

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Drain

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Absorbency test of the sample

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Ok

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Dyeing period

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Add salt, wetting agent, antifoaming agent, sequestering agent, and run a

P^H check

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Color dosing at 60⁰ C for 30 min

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Color migration at 60⁰ C for 30 min

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Migration package check

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Ok

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Run the machine for 20 min at 60⁰ C with color and salt

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Soda dosing at 60⁰ C for 40 min

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Cotton dyeing at 60⁰ C for 50 min

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Check sample

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Ok

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Drain

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Rinse for 10 min

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Add acetic acid for neutralization and run for 10 min at 50⁰ C

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Drain

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Add washing chemical and run at 95⁰ C for 20 min

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Add washing chemical and run at 90⁰ C for 20 min

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Wash sample check

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Ok

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Drain

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Rinse for 10 min

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Add fixing chemical and half acetic acid, run at 50⁰ C for 20 min

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Add softening agent and rest half acid, run at 60⁰ C for 20 min

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Check finished sample

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Ok

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Drain

So, If anyone wants to get the proof, he can apply this technique in the yarn dyeing process for producing medium and dark shades on 100% cotton. Please, let me know the results.